Automobile truck-wheel.



G. WALTHER. I

AUTOMOBILE TRUCK WHEEL.

APPLICATION FILED MAY 26, m1:

1,120,25 Patented D6C.8.1914.

I mu

b1 (you/a7 Pl l citizen of the United States, residing at Dayton, in the county of Montgomery and I fiiflhe object-of said invention is to provide I is a sectional eleration on line aa of Fig. 1;.audF1g. 3 is across section on the line tubular GEORGE WALTHEB, oglmY'r'on, onto.

AUTOMOBILE uc g-wHEE-n 1' 0 all whom it may concern .Be it known that I, Geonor. VVAL'rnER, a

Stateof Ohio,- ha've invented certain new and useful Improvements in Automobile Truck Wheels; and I do declare the following to be a full, clear, and exact descrip tion of the invention; such as will enable others skilled-in the art to which it appertains to make and'use the same, reference being had to the accompanyingdrawings, and to the letters and figures of reference marked thereon, which form a part of this specification;

This invention'relates' to a new article of comprising an automobile manufacture:

ck wheel.

an automobile'truck wheel of cast steel of minimum weight-and mafimum strength,

for example, a-wh'eel the metal of which is capable of exerting "a maximum uniform strength at all points of the structure without increasing the weight thereof. In the structure, the spokes are hollow and extend in broad curves which terminate in the rim. All the crystals of the metal lie at right angles with or radial tothe inner and outer surfaces of the casing. Therefore the crystals 'do not 'at-an'y point meet at an angle, thus avoiding any. weak points in the structure. u

In the accompanying drawings. Figure 1 is an elevation of an automobile truck wheel made inaccordance with my invention, and portions of which appear in section; Fig. 2

The 'wheel thus illustrated is essentially cast in one integral member from steel When so made, it consists of a. huh I with spokes 2 radiating These spokes flare at 3, and extend in an annular channel rim 4 the margins 5"of which extend inwardly. The flaring of the Specification 0! Letters Patent.

Application filed May 26, 1913. Serial No. 169,801

therefrom.

- Pat'entedDee. Q,

I spokes begin approximately two thirds the length of said; spokes from the hub and exk tendsin sweeping curves into therim. The channel rim serves to make strong the pe riphery of the'wheel andstof git-e -it the necessary resiliency and to provide flanges which are suitably aperturcd to receive tireattaching means. The outer ends 3 .of the spokes 2 :maybe provided \vithintegralbraces 7 which substantially contorni to the v i contour of the rim. By this means the Y wheel is strengthened at such points. The

tubular spokes 2 and thejhub- 1 are provided with apertured bos ses 6 for the. attachment 'for the usual sprocket and brake drum (not,

shown).

It is well known, to thesci'ence of metal- I I lurgy, thatv cast metal, upon cooling, ar-

ranges the crystals thereof at right angles or radial; to. .the contour [of the casing.

Owing tothis inherent charac eristic of such metal, where right angle. joints or. connections are formed, there is a decrease in the efficiencyof the metal due thereto. Wherethe crystals are formed regularly or he in the same direction. for example, where the spoke is continuous with. the channel rim through curves such clecrease'in'the elli ciency of the-metal 'is' oliviated. From the drawings. it willbe seen, 'that all portions of the wheel uhere strength isv desired as well as lightness. 'for example. the hubs.

spokes and rim. the crystals of the metal 'lie at right angles or radial with the con metalof the spokes andtheoutwardly flaring extensions thereof. which runinto, and

form the rim of the wheel, as well as the rim of the wheel. are substantially the-same in thickness throughout the running lengtln This will be observed from Fig. 1 of the drawings. The construction is one of lightness as well as tenacity.

I claim as my invention: between the. spokes and the rim is elimi 10 A new article of inanufaeture, c0mprising mated, substantially as specified. a metal wheel the hub, spokes and rim of In testimony whereof I afiix my si which are integrally united, the ends of the ture, in presence of two witnesses. spokes being extended in broadly sweeping GEORGE VALTHFR curves to form the rim, and the said rim being open opposite the spokes to the points Witnesses: wherethe curvatures of the spokes form MELLIE GALLOWAY, said Tim, whereby the formation of joints MATHEW SEIBLEB. 

